The Most Popular Portable Propane Heater in North America. This patented radiant 6000-12000 BTU Liquid Propane heater connects directly to one 1 lb cylinder and is the perfect solution for heating enclosed spaces like cabins up to 300 ft^2 A swivel regulator gives you the ability to adapt usage from disposable cylinders to a remote gas supply with the purchase of a single hose and filter.